ATTO Technology FastStream SC 5500E Installation And Operation Manual page 25

15 Select a Sector Size.The RAID group sector
size must be evenly divisible by the sector size
of any member disk.
• 512 bytes is the default size for most
operating systems.
• For Windows XP (32-bit support) select 4 KB
sectors to enable large volume support
(greater than 2 TB).
16 Select a SpeedRead feature. SpeedRead
looks ahead during reads and stores the data in
cache memory. The optimum setting depends
on your actual I/O and storage. You may adjust
this setting later.
• Enabling SpeedRead may boost
performance when you are running video
playback and other applications which
access data sequentially.
• Disabling SpeedRead is a better choice for
audio applications.
• SpeedRead Auto is usually the best choice
for database applications.
17 Choose a Prefetch option--the number of extra
stripes that are read when the SpeedRead
setting is set to enabled or auto.
18 Choose an Auto-Rebuild feature if it is
available for your RAID configuration (refer to
Auto-Rebuild on page 16).
19 Choose a Rebuild Priority level. Rebuild
Priority allows you to determine whether rebuild
or I/O transactions take precedence during
rebuild operations. If you choose low priority,
for example, rebuilds take longer but the rebuild
has minimal impact on performance.
20 Click on Next.
21 A chart showing the setup you have selected
appears. If everything is the way you want it,
click on Commit to save your configuration.
22 For RAID types that rebuild, a warning box tells
you that all data on the attached disks is to be
destroyed and the rebuild process.
In the warning box, verify that you want to
complete the configuration by clicking on Yes.
Clicking on No ends the procedure without
making a change.
23 The FastStream configures the storage (the
process may take several hours). Upon clicking
Yes, the Health and Status Monitor page
appears.
20